Extended Life [7800mAh 11.1V 9cells] High Capacity Laptop Battery for DELL XPS M1730 series, fits 312-0680 HG307 WG317 XG510 OXG510 Extended laptop battery for DELL XPS M1730 series. Pls study the product desription below to make sure your original battery and laptop meet the compatibility of both the part # and models We are direct from manufacturer and all batteries are made of A grade cells. Shipping from OHIO, USA, 2 to 6 days delivery guarantee. High capacity battery certified by CE and RoHS. 100% OEM compatible! Warranty: 30-day money back & 1-year guarantee!